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A Novel Volume-based Cone-beam Computed Tomographic Periapical Index.

Matthew Boubaris¹, Keen Long Chan¹, Wei Zhao¹

¹School of Dentistry and Oral Health, Griffith University, Gold Coast, Australia.

Journal of Endodontics

|May 13, 2021

Summary

A new Cone-Beam Computed Tomographic Periapical Volume Index (CBCTPAVI) was developed to accurately measure periapical lesion volume. This index improves the assessment of lesion size and prediction of treatment outcomes.

Keywords:

Cone-beam computed tomography dental radiograph endodontics periapical index volume index

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Area of Science:

Dentistry
Oral Radiology
Endodontics

Background:

Periapical lesions are common in endodontic treatment.
Current Cone-Beam Computed Tomographic Periapical Index (CBCTPAI) shows significant volume variations for scores 3, 4, and 5.
This limits its use in predicting treatment outcomes.

Purpose of the Study:

To evaluate volume variations in periapical lesions using CBCTPAI.
To develop a novel, volume-based periapical index for improved accuracy.

Main Methods:

Cone-beam computed tomographic images of 273 periapical lesions were analyzed.
3D medical imaging software was used to determine lesion volume via semiautomatic segmentation.
A new index, CBCTPAVI, was developed using partition classification analysis.

Main Results:

CBCTPAI demonstrated substantial volume variations, hindering accurate prediction.
The new CBCTPAVI showed high sensitivity, specificity, and precision (≥0.90).
CBCTPAVI achieved 98.169% accurate classification with a low root mean square error of 0.07.

Conclusions:

The proposed CBCTPAVI enables precise 3D lesion size classification.
This new index facilitates accurate assessment of lesion healing.
CBCTPAVI aids in predicting endodontic treatment outcomes more reliably.